Add dataset Lean3-Mathlib

README.md

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+---
+license: apache-2.0
+task_categories:
+  - text-generation
+  - feature-extraction
+language:
+  - en
+tags:
+  - theorem-proving
+  - formal-methods
+  - lean
+  - mathlib
+  - mathematics
+size_categories:
+  - 10K<n<100K
+dataset_info:
+  features:
+  - {name: fact, dtype: string}
+  - {name: statement, dtype: string}
+  - {name: proof, dtype: string}
+  - {name: type, dtype: string}
+  - {name: kind, dtype: string}
+  - {name: symbolic_name, dtype: string}
+  - {name: library, dtype: string}
+  - {name: filename, dtype: string}
+  - {name: imports, list: string}
+  - {name: deps, list: string}
+  - {name: docstring, dtype: string}
+  - {name: line_start, dtype: int64}
+  - {name: line_end, dtype: int64}
+  - {name: has_proof, dtype: bool}
+  - {name: source_url, dtype: string}
+  - {name: commit, dtype: string}
+  - {name: content_level, dtype: string}
+  splits:
+  - {name: train, num_examples: 143168}
+  config_name: default
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+---
+
+# Lean3-Mathlib
+
+Declarations from mathlib3, the Lean 3 mathematical library (archived).
+
+## Source
+
+- Repository: https://github.com/leanprover-community/mathlib
+- Commit: `65a1391a0106c9204fe45bc73a039f056558cb83`
+- Files: 3220
+- License: apache-2.0
+
+## Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| fact | string | Verbatim declaration: statement followed by proof where present |
+| statement | string | Verbatim statement (keyword through the closing period) |
+| proof | string | Verbatim proof block (`Proof. ... Qed.`/`Defined.`), empty if none |
+| type | string | Raw declaration keyword |
+| kind | string | Normalized kind |
+| symbolic_name | string | Declaration identifier |
+| library | string | Sub-library |
+| filename | string | Repository-relative source path |
+| imports | list[string] | File-level `Require`/`Import` modules |
+| deps | list[string] | Intra-corpus identifiers referenced |
+| docstring | string | Preceding documentation comment, null if absent |
+| line_start | int | First source line |
+| line_end | int | Last source line |
+| has_proof | bool | Whether a proof block was captured |
+| source_url | string | Upstream repository |
+| commit | string | Upstream commit extracted |
+| content_level | string | `statement+proof` |
+
+## Statistics
+
+- Entries: 143,168
+- With proof: 97,646 (68.2%)
+- With docstring: 32,540 (22.7%)
+- Libraries: 416
+
+### By type
+
+| Type | Count |
+|---|---|
+| lemma | 90,041 |
+| def | 20,579 |
+| instance | 15,202 |
+| theorem | 14,762 |
+| class | 1,205 |
+| structure | 872 |
+| inductive | 306 |
+| example | 200 |
+| macro | 1 |
+
+## Example
+
+```coq
+@[simp] lemma vsub_vadd (p1 p2 : P) : p1 -ᵥ p2 +ᵥ p2 = p1 :=
+add_torsor.vsub_vadd' p1 p2
+
+/-- Adding a group element then subtracting the original point
+produces that group element. -/
+```
+
+- kind: lemma | symbolic_name: `vsub_vadd` | src/algebra/add_torsor.lean:77
+
+## Use
+
+Statement and proof are available both joined (`fact`) and split (`statement`, `proof`) for
+proof-term modeling, autoformalization, retrieval, and dependency analysis via `deps`.
+
+## Citation
+
+```bibtex
+@misc{lean3_mathlib_dataset,
+  title  = {Lean3-Mathlib},
+  author = {Norton, Charles},
+  year   = {2026},
+  note   = {Extracted from https://github.com/leanprover-community/mathlib, commit 65a1391a0106},
+  url    = {https://huggingface.co/datasets/phanerozoic/Lean3-Mathlib}
+}
+```

data/train-00000-of-00001.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:4f9b1066613f52c08b779f08cbd54650521e9112e869339d1e1919d7923cda10
+size 33127549